Hose coupling



K. DOERR HOSE COUPLING Sept. 13, 1949.

Filed Aug. 21, 1945 Patented Sept. 13, 1949 Shermany Manufacturing Co.,' Battle Creek, Mich., a corporatinofz Michigan Application August 21, 1945,;,VSerialL-o. 611,795 v I. This, invention is a novelimprove-ment in threadedly engaged separable'hose couplings or the like of the type consis'tingof' tubular members` adaptedto be inserted in the bores of rubber or other flexible'hose sections', witn-l threaded means for vconnecting theftubular' member'stogether. said tubularmembers carrying annular claws or clinching fingers having 'downturned-'ends adapted to be'mashed down; intol ends off their respective sections to 'maintain thetubular memberspositionect therein;

'Heretofore such hose couplings have been provided with clinching inigersfhaving'downturned ends,'but the clinching flngers'c'arried by'each tubular member havebeen' "of uniform length; anxiit; has thus been foundfthat when' these'n'- gers;r are mashed down upon the: hosea substan.; tiallyv continuous: annular cut is made entirely around the circumference of 1 the hose which greatly weakensthe hose latA such point so that the parts may become readilyseparable by aslight pull on the hose. l

The principal QbJ'eCtQf. ,my present .invention iS to provide a hosecOupling of tlif's'arne type in which the clinching fingers are made alternately-v circlllar* incision around thejcircunference'bf the Other minor objects of the invention will be hereinafter set forth.

I will explain the invention with reference to the accompanying drawing, which illustrates one practical embodiment thereof, to enable others familiar with the art to adopt and use the same; and will summarize in the claims the novel features of construction, and novel combinations of parts, for which protection is desired.

In said drawing:

Figure 1 is a plan view of my hose coupling, showing a hose section secured to one of the tubular members.

Fig. 2 is an end view of the coupling member shown in Fig. 1.

Fig. 3 is a longitudinalssection on the line 3 3, Fig. 1.

Fig. 4 is a transverse section on the line 4--4, Fig. 1.

As shown, the hose coupling consists of a tubular member l adapted to fit within the end of the hose section A, same being provided with annular ribs or undulations Ia to frictionally grip the claims. (o1. 28ssrlI usual. interior lining in the bore of the hose. The outer'endi of coupling I is formed with an external annular shoulder Ib substantially normal to the axis-'or member I; and beyond flange Ib is anv enlarged tubular portion Ic which ris exteri'orl'y-1 threaded as' at Ie for the reception of the internal' threads, of the' nut lI'carried by the other tubular member 3, hereinafter described. Y

'Preferably thev outer end of the enlarged tubular portion' Ic is providedv with an internal annular iiafng'e Id` forming a seat for the washer (not shown) usually' provided to make the connection watertight. A

"Around the member I is a clamping clawl device comprising -a ring 2 `of annular shape disposed' substantially normal to the axis of the tubularY member I Y and' Yc'onined between the annular shoulder I"b and, the outer undulation- Ia of member 'lftosecure the ring into the position shown in Fig. 3. Rfing 2 is provided on its periphery' with anl annular series of clinching fingers 2a and 217,' which fingers are normallyA disposed at anf angle of about '45to the axis of thetubular mem'-4 ber*4 I1', but; as shown in Figs. 1, 2 and 3, the same may be mashed down `substantially parallel with the'axis of tubular member I so that their in"- tiiijned'v endsl 2c will cut into, or engage orgrip, the-outer surface. of the hose section A.

As shown', the vclinch'ing ngers Zia are shorter than the alternate fingers 2b, so that when mashed. down as above described the inturned erid'sYf-ewill' be staggered around the circumferer'r'ce of the hose A, thereby eliminating the possi-` bility of forming a substantially continuous cut all the way through the circumference of the hose as is the case where the fingers are all of the same length. Thus the provision of alternately short and long fingers 2a and 2b respectively will give a more secure grip by the fingers on the hose, and since the inturned ends 2c are staggered around the circumference of the hose, the possibility of forming a `continuous cut around the hose, which would materially weaken the same, is thereby eliminated.

The other member of the coupling comprises a similar tubular member 3 adapted to t within the end of the adjacent hose section, the same being provided with annular ribs or undulations 3a similar to and for the same purpose as the undulations la. The outer end of member 3 is outturned as at 3b to form an external annular shoulder; and rotatably mounted upon the tubular member 3 is a nut 4 having internal threads lla adapted to engage the external threads le of the tubular enlargement Ic of member l, as

clearly shown, said nut 4 having an inwardly extending fiange 4b of somewhat larger diameter than the major diameter of the tubular member 3, said flange seating against the outturned iiange 3b at the outer end of tubular member 3, whereby the nut 4 may be freely rotated upon the member 3 but the iiange 3b of member 3 may not be withdrawn through the annular flange 4b of nut 4. In use, an annular packing washer (not shown) would-be positioned between the ange Id of tubular portion lc of member l, and the outturned flange 3b of the tubular member V3, to render the connection watertight.

Member 3 is similarly provided with an annular clamping claw device comprising an annular ring 5 confined between the flange 4b of nut 4 and the outer undulation 3a of the tubular member 3, the ange 4b being sufficiently loosely confined between the ring 5 and flange 3b to permit ready rotation of the nut 4 on the member 3. Ring 5 is also provided with alternating short clinching fingers 5a and long clinching fingers 5b, each finger having an inturned end 5c; and normally the fingers 5a and 5b would be disposed at an angle of substantially 45 to the axis of the member 3 so that the hose section to beconnected may be inserted over the tubular member 3 and under the ends 5c of fingers 5a, 5b aft-er which the fingers may be mashed down in the same manner as shown in Fig. 1 so as to lie substantially parallel with the axis of the tubular member 3.V In such position the inturned ends 5c of the fingers 5a, 5b, would be staggered around the circumference of the hose in the same manner as the lingers 2a, 2b are staggered around the hose section A, thereby giving more secure grip between the lingers and -hose and eliminating the possibility of forming a substantially continuous circular cut completely around the periphery of the respective hose section.

The tubular member 3, with the nut 4 and clamping device 5, may separately be used to connect a hose Section with a faucet, or the like, while tubular member I with its clamping device 2 may be separately used to connect a hose section to a threaded nozzle, or the like, if desired.

I do not limit my invention to the exact form shown in the drawing, for obviously changes may be made therein within the scope of the claims.

I claim:

1. In a hose coupling or the like, a tubular member adapted to enter the bore in the end of a hose section; and a clamping claw device fixedly mounted on said tubular member, said clamping claw devic-e comprising an annular base plate overlying the end of the hose and disposed substantially normal to the axis of said tubular member, said base plate having two annular alternating series of clinching fingers, said lingers of one series being short, while'the lingers of the otherv seriesV areof greater length, each series having ends adapted to grip the outer wall of the hose against said tubular member when the fingers are mashed substantially parallel with the axis of said tubular member, said tubular inember extending'into said hose section beyond the ends of said fingers to provide a support 'for a 1sltr'ong and positive grip of said fingers on said ose.

2. A separable hose coupling, comprising a pair of tubular members adapted to enter the bores in adajcent ends of hose sections respectively; threaded joining means for maintaining said tubular'members in axial alignment; and a singlef clamping claw device IiXedly mountedon each of said tubular members Aadjacent their Uouter ends, each clamping claw device comprising anV annular base plate disposed substantially normalV to the axis of the related tubular'member and having an annular series of clinching fingers, said fingers being alternately short and longrand.

having ends adapted to grip the outer Wall of the related hose section against the side of said tubular member when the ngers are mashed down side by sid-e substantially parallel with the axis of the related tubular member,y said tubular member extending into said hose sectionbeyon'd` the ends of said fingers to provide a positive sup? port for a strong grip of said lingers on said hose. KEITH DOERR.

REFERENCES CITED The following references are of record in the file of this patent:

, UNITED STATES PATENTS 

